Apple Mac Pro A1289 5,1 Mid 2010 Backplane Logic Board. This will work with any original 2010 or original 2012 5,1 Mac Pro tower. Tested working pull from a working tower. Other parts available please ask thanks!! If your system is a 2009 model year that has been firmware upgraded, this auction is not right for you. You need to buy a 2009 model year back plane board, please look at my other listing for the 2009 model year back plane boards
